Battery question ?

[Crash Test Dummy]

Hi all,

Just a quick question :-

I have two 12v 12Ah gel batteries, if I was to wire them in series would the combined Ah be 24??

I know the voltage would be 24v but not sure about Ah

If not what would be the equation to work this out.

Cheers

[Tom Burgess]

No, you need to wire in Parallel to give 12V 24Ah or alternatively wire in series to give 24V 12Ah.

[Mart61]

Connecting in Series
When connecting your batteries in Series you are doubling the voltage while maintaining the same capacity rating (amp hours). This might be used in a scooter, Power Wheels kids vehicle, or other applications. Just use a jumper wire between the negative of the first battery and the positive of the second battery. Run your negative wire off of the open connector from the first battery and your positive off of the open connector on your second battery.

Connecting in Parallel
When connecting in Parallel you are doubling the capacity (amp hours) of the battery while maintaining the voltage of one of the individual batteries. This would be used in applications such as laptop batteries, some scooters, some ups backups, etc. Use a jumper wire between the positives of both batteries and another jumper wire between the negatives of both batteries. Connect your positive and negative wires to the same battery to run to your application.



Got from here.

[Crash Test Dummy]

Thanks guys,

Would there be any benifit charging in series or parallel, or just individually ?

Cheers

[Tom Burgess]

Thanks guys,

Would there be any benifit charging in series or parallel, or just individually ?

Cheers

Parallel charging is debated often, especially when concerning LiPo's. Personally I don't do it.

[rapidgaz]

Parallel charging is debated often, especially when concerning LiPo's. Personally I don't do it.

thought you did with an 2s2p rx pack!!!

[xygax]

And if you look at the manufactures data sheets they recomend that parellel charging more than 6 strings in parellel should be avoided. we frequently charge a 540v battery say 150 Ah six strings wide making a 900Ah 540v stach (40 blocks in series 6 in parellel). so yes you can charge them any way you want either series or parellel...

Steve

[inferno]

Youll ideally need to charge with your gels in series to get 24v into the lipos. Otherwise your pushing the charger as it ramps up to 24v and losing energy in heat exchange etc. U should get 2-4 charges out of them for your 5200 pack...

[Tom Burgess]

thought you did with an 2s2p rx pack!!!

Yeah but I am talking more than one "seperate" pack at a time.

[inferno]

Second thoughts, your only charging 4.2v cells unless u use the discharge lead, does your charger need the discharge lead on?

[Crash Test Dummy]

The Batteries I'm on about charging are 12v pb gel batteries, my other post was about lipos ie 2v per cell

[rapidgaz]

Yeah but I am talking more than one "seperate" pack at a time.

just having a larf mate, so bloody bored sat at desk with f all to do. and need to emuse my self

[Tom Burgess]

just having a larf mate, so bloody bored sat at desk with f all to do. and need to emuse my self

You've got a desk??